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Additive for dry-mixed mortar, dry-mixed mortar and preparation method thereof

A dry-mixed mortar and additive technology, applied in the field of building materials, can solve the problems of cumbersome preparation steps of dry-mixed mortar, oxidation, and increased cost of dry-mixed mortar preparation

Active Publication Date: 2016-08-24
深圳市绿发鹏程环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the components in the dry-mixed mortar will be oxidized and agglomerated when exposed to water, affecting the use
The building aggregates used in dry-mixed mortar generally contain more water. Therefore, in order to prevent the oxidation and caking of traditional dry-mixed mortar before use, the building aggregate must be dried before the dry-mixed mortar is prepared. steps to remove part of the moisture in the building aggregates, resulting in cumbersome preparation steps for dry-mixed mortar, and special drying equipment is required for drying, while increasing the preparation cost of dry-mixed mortar

Method used

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  • Additive for dry-mixed mortar, dry-mixed mortar and preparation method thereof
  • Additive for dry-mixed mortar, dry-mixed mortar and preparation method thereof
  • Additive for dry-mixed mortar, dry-mixed mortar and preparation method thereof

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preparation example Construction

[0034] Such as figure 1 As shown, the preparation method of dry-mixed mortar in one embodiment can be used to prepare the above-mentioned dry-mixed mortar. The preparation method of the dry-mixed mortar of the present embodiment comprises the steps:

[0035] Step S110: Weigh the following components in parts by weight: 150-280 parts of Portland cement, 712-842 parts of construction aggregate, 0.00025-0.0004 parts of hydroxypropyl methylcellulose and additives for dry-mixed mortar 8 to 16 copies.

[0036] Among them, Portland cement is preferably Portland cement with a strength grade of 42.5R.

[0037] Among them, the construction aggregate is recycled construction waste aggregate.

[0038] Further, the construction aggregate is at least one selected from discarded bricks and discarded cement blocks. Preferably, the discarded bricks are selected from at least one of discarded red bricks and blue bricks.

[0039] Preferably, the construction aggregate has a length of 0.01 m...

Embodiment 1

[0048] The preparation method of the dry-mixed mortar of the present embodiment is as follows:

[0049] (1) According to parts by weight, weigh 150 parts of Portland cement with a strength grade of 42.5R, 842 parts of construction aggregate, 0.0003 parts of hydroxypropyl methylcellulose and 8 parts of additives for dry-mixed mortar. Among them, the building aggregates are discarded red bricks and discarded cement blocks, and the length of the building aggregates is 1 to 2 mm; the additives of dry-mixed mortar are composed of the following components according to the mass percentage: silicon dioxide 12%, Aluminum oxide 20%, calcium oxide 13%, magnesium oxide 15%, potassium oxide 10%, sodium oxide 17%, and ferric oxide 13%.

[0050] (2) Portland cement, building aggregate, hydroxypropyl methylcellulose and additives are mixed to obtain dry-mixed mortar. The dry-mixed mortar of this embodiment is used for masonry projects.

[0051] The moisture content of the dry-mixed mortar o...

Embodiment 2

[0055] The preparation method of the dry-mixed mortar of the present embodiment is as follows:

[0056] (1) According to parts by weight, weigh 180 parts of Portland cement with a strength grade of 42.5R, 812 parts of construction aggregate, 0.00025 parts of hydroxypropyl methylcellulose and 16 parts of additives for dry-mixed mortar. Among them, the construction aggregate is discarded cement blocks, and the length of the construction aggregate is 0.01 to 4 mm; the additives of the dry-mixed mortar are composed of the following components according to the mass percentage: 15% silicon dioxide, 16.5% aluminum oxide , calcium oxide 10.5%, magnesium oxide 16.5%, potassium oxide 8.5%, sodium oxide 17.8% and ferric oxide 15.2%.

[0057] (2) Portland cement, building aggregate, hydroxypropyl methylcellulose and additives are mixed to obtain dry-mixed mortar. The dry-mixed mortar of this embodiment is used for masonry projects.

[0058] The moisture content of the dry-mixed mortar o...

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Abstract

The invention relates to an additive for dry-mixed mortar. The additive is prepared from the following components in percentage by weight: 12-15% of silicon dioxide, 16.5-20% of aluminum oxide, 10.5-14% of calcium oxide, 12-16.5% of magnesium oxide, 8.5-12% of potassium oxide, 15-17.8% of sodium oxide and 12-15.2% of iron sesquioxide. The additive for the dry-mixed mortar is used in dry-mixed mortar, so that the step of drying building aggregates of the dry-mixed mortar is not needed. In addition, the invention further provides the dry-mixed mortar and a preparation method thereof.

Description

technical field [0001] The invention relates to the field of building materials, in particular to an additive for dry-mixed mortar, dry-mixed mortar and a preparation method thereof. Background technique [0002] Dry-mixed mortar refers to a kind of granule or powder formed by physical mixing of dried and screened aggregates, inorganic cementitious materials and additives in a certain proportion, transported to the construction site in bags or in bulk, and then added After mixing, the material can be used directly. Dry-mixed mortar is widely used in construction and decoration, such as masonry, plastering and other projects. With the continuous acceleration of the urbanization process, the construction and decoration industries have developed rapidly. As one of the emerging dry-mixed materials in the field of building materials, the demand for dry-mixed mortar is increasingly in short supply. However, because the ingredients in the dry-mixed mortar will be oxidized and agg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B22/06C04B28/04
Inventor 黄国祥黄志浩
Owner 深圳市绿发鹏程环保科技有限公司